CN206021009U - A kind of wireless low-power consumption intelligent detection device of warm and humid degrees of data - Google Patents

Abstract

The utility model relates to the technical field of temperature and humidity measurement and control, in particular to a wireless low-power intelligent detection device for temperature and humidity data, including a wireless intelligent convergence terminal, a wireless temperature and humidity data collection terminal, and the wireless temperature and humidity data collection terminal includes a second central processing device, wireless transceiver module, sensor interface, dial switch and integrated power supply module; the wireless intelligent convergence terminal includes the first central processing unit, wireless communication module, 3G module, storage module, power supply module, keyboard, display module, printing module and synchronization Clock module, the utility model has the advantages of simple structure, low cost, convenient use, low power consumption, intelligent alarm, simple installation and maintenance, etc., and uses the carrier wake-up mechanism to effectively reduce the power consumption of the temperature and humidity data collection terminal and improve In order to ensure the service life of the collection terminal, the change of temperature and humidity data can be controlled in time by using the SMS alarm function, which has practical value.

Description

A wireless low-power intelligent detection device for temperature and humidity data

technical field

The utility model relates to the technical field of temperature and humidity measurement and control, in particular to a wireless low-power consumption intelligent detection device for temperature and humidity data.

Background technique

Temperature and humidity data detection has been widely used in greenhouse breeding, climate detection, use and protection of precision instruments, item storage, industrial production and other fields. The work of any industry is inseparable from the air, and the temperature and humidity of the air are directly related to work, life, and production, making the monitoring and control of humidity more and more important. At present, temperature and humidity detection technologies include watch strap temperature measurement, optical fiber temperature measurement, infrared imaging temperature measurement, etc. The watchband temperature measurement technology has weak driving ability, low real-time data, short communication distance and poor communication reliability. Infrared imaging temperature measurement is easily affected by environmental factors, and has a greater impact on the temperature measurement readings on bright or polished metal surfaces. It is limited to measuring the external temperature of the object, and it is inconvenient to measure the temperature inside the object and when there are obstacles. Therefore, the functions of strap-type temperature measurement and infrared imaging temperature measurement are limited when used in the field. Infrared optical fiber temperature measurement technology has the characteristics of no electromagnetic interference, corrosion resistance, passive real-time monitoring, electrical insulation, good explosion-proof performance, etc., but the price is relatively expensive and cannot be widely accepted by customers.

Wireless communication technology has been gradually applied in the field of temperature and humidity detection, but there is no unified solution for low-power communication, reliable transmission in short and medium distances, and low-cost intelligent alarm. These technical problems limit the popularization and application of the existing wireless temperature and humidity detection technology in various fields.

Utility model content

Aiming at the deficiencies of the prior art, the utility model discloses a wireless low-power intelligent detection device for temperature and humidity data, which is used to solve the power consumption and cost problems of wireless communication in temperature and humidity data monitoring, and improves the use of collection terminals life.

The specific technical scheme is as follows:

A wireless low-power intelligent detection device for temperature and humidity data, including a wireless intelligent convergence terminal, a wireless temperature and humidity data collection terminal, the wireless temperature and humidity data collection terminal includes a second central processing unit, a wireless transceiver module, a sensor interface, a dial code switch and integrated power module, wherein the second central processing unit is electrically connected to the wireless transceiver module, the sensor interface, the dial switch and the integrated power module; the wireless intelligent aggregation terminal includes a first central processor, wireless communication module, 3G module, storage module, power supply module, keyboard, display module, printing module and synchronous clock module, wherein the first central processing unit is electrically connected to the wireless communication module, the 3G module, the The storage module, the power supply module, the keyboard, the display module, the printing module and the synchronous clock module;

Preferably, the wireless communication module adopts a wireless transparent transmission module modeled as Si4432, which supports 433Mhz and 470Mhz frequency bands. In practical applications, the frequency band can be flexibly configured through the dial switch, and the carrier wake-up mechanism is used to realize the low power consumption of the system. consumption data collection and transmission;

Preferably, the second central processing unit is an AVR series single-chip microcomputer, which supports 3.3V-5V power supply. Through the selection of the frequency of the external crystal oscillator, the power consumption of the single-chip microcomputer can be further reduced on the basis of satisfying the speed of function realization. The first central processing unit The model of the processor is MCU Atmega128L, and the model of the second central processing unit is MCU Atmega16L;

Preferably, the integrated power supply module is a 3.7V polymer lithium battery module containing charging, the polymer lithium battery module has a charge and discharge protection circuit, and can be connected to an external 12V/1A or 18V/1A solar panel, and the housing is provided with There is an LED indicator light that can display the charging status;

Preferably, the wireless intelligent convergence terminal supports the numbering and data collection of single-bus DS18B20 temperature measuring cables, supports regular inspection and real-time detection functions for the wireless temperature and humidity data collection terminal, and can collect the wireless temperature and humidity data The data of the terminal is received and stored, and the upper and lower limits of temperature and humidity can be determined for the received data. If there is an over-limit situation, an SMS alarm will be sent immediately through the industrial-grade MC8630 3G module, and the UDP network data transmission mode of the industrial-grade MC8630 3G module can be used Carry out remote transmission of data;

Preferably, the solar power supply contained in the integrated power module is composed of a 12V/1A or 18V/1A solar panel, a step-down circuit, and a voltage stabilizing circuit, which can stably output 4.2V/1A voltage for the normal operation of the wireless temperature and humidity data collection terminal , and at the same time can be used for charging the polymer lithium battery, and the use of solar power can make full use of renewable resources, which is environmentally friendly.

Beneficial effect:

The utility model includes a wireless temperature and humidity data collection terminal and a wireless intelligent convergence terminal. The wireless temperature and humidity data collection terminal includes a first central processing unit, a wireless transceiver module, a sensor interface, a dial switch and a power supply module, and is used for on-site single bus Data collection, storage and uploading of DS18B20 temperature measuring cable and SHT series humidity sensor. The wireless intelligent aggregation terminal includes a first central processing unit, a wireless communication module, a 3G module, a storage module, a power supply module, a functional interface, a keyboard, a display module, a printing module, and a synchronous clock module, which are used to collect data from the wireless temperature and humidity data collection terminal. Carry out storage and forwarding, printing, intelligent analysis and alarm, and can perform numbering and data collection operations on temperature measuring cables. The wireless low-power intelligent detection system of temperature and humidity data uses its carrier wake-up mechanism to realize low-power data collection and transmission of the system. Support solar power supply, easy to install. Modular design is adopted, which is easy to configure and convenient for later system maintenance. Inexpensive and rich in functions, it is suitable for temperature and humidity data detection scenarios with short and medium communication distances.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Figure 1: Schematic diagram of the wireless intelligent convergence terminal structure of the wireless low-power intelligent detection device for temperature and humidity data;

Figure 2: Schematic diagram of the wireless temperature and humidity data acquisition terminal structure of the wireless low-power intelligent detection device for temperature and humidity data;

Figure 3: Schematic diagram of the solar power supply mode of the wireless low-power intelligent detection device for temperature and humidity data.

Reference signs are as follows: 1. Wireless intelligent convergence terminal, 10. First central processing unit, 11. Storage module, 12. Printing module, 13. Synchronous clock module, 14. Functional interface, 15. Keyboard, 16. 3G module, 17. Display module, 18. Wireless communication module, 19. Power module, 2. Wireless temperature and humidity data acquisition terminal, 21. Wireless transceiver module, 22. Sensor interface, 23. Integrated power module, 24. DIP switch, 25. Second CPU.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Combining Figure 2 and Figure 3, see Figure 1: a wireless low-power intelligent detection device for temperature and humidity data, including a wireless temperature and humidity data collection terminal and a wireless intelligent convergence terminal, and the wireless temperature and humidity data collection terminal is divided into temperature data collection terminals Both of them contain two dial switches, which are used to set the warehouse number of the data collection terminal and the terminal number of the data collection terminal itself. The warehouse number determines the wireless communication frequency band used by the collection terminal. The terminal The number is convenient for data upload and storage. The data collection terminal is in a low-power sleep state when there is no data collection task. When the user needs to collect on-site temperature and humidity data, the wireless intelligent aggregation terminal will first send a certain number of wake-up packets to wake up all the data collection terminals in a certain warehouse After the data collection terminal is woken up, data collection is performed immediately, and when the data collection is completed, the data collection terminal delays for a certain period of time according to its own terminal number so that all data collection terminals in the warehouse upload data to the wireless intelligent aggregation terminal according to the time queue. The temperature and humidity data acquisition terminal is powered by a polymer lithium battery. Assuming that the user detects the temperature and humidity once an hour, each wireless temperature and humidity data acquisition terminal consumes about 6mAH of energy per day. If a polymer lithium battery with a nominal capacity of 8000mAH is used Battery-powered, and assuming that the actual capacity of the battery is 70% of the nominal capacity, the wireless temperature and humidity data collection terminal can work normally for two and a half years, and considering the aging of the battery, it can guarantee normal working time for at least two years. The advantage of using polymer lithium battery for power supply is that it is easy to install and can effectively avoid lightning interference. In addition, the wireless temperature and humidity data acquisition terminal also supports solar power supply. You can choose solar panels with parameters such as 12V/1A or 18V/1A that are more common in the market and easy to purchase. The output voltage of the solar panel is connected to the wireless temperature and humidity data acquisition. A step-down protection module needs to be added in front of the terminal to ensure that the voltage connected to the acquisition terminal is stable at about 4.2V. The rechargeable polymer lithium battery stores energy to ensure that the collection terminal is backed up at night or when there is insufficient light. The renewable solar power supply method is used to ensure sufficient energy for the collection terminal, which is economical and environmentally friendly.

Before using the wireless intelligent aggregation terminal, use the local time as a reference, and set the time parameters correctly through the "Clock Settings" menu under the main menu "System Settings" for information storage. The wireless intelligent aggregation terminal provides users with a friendly human-computer interaction interface. Users can select corresponding operations through the four buttons "Up", "Down", "OK" and "Back" according to the window menu prompts. In the application of single-bus multi-point temperature measurement cable, the specific and unique 64-bit serial number inside DS18B20 can be used to realize accurate and real-time collection of the surrounding temperature value of a certain sensor, but how to combine each temperature information with the actual sensor in the cable? It is more difficult to correspond to the physical location. The current solution is to use the two-byte EEPROM storage unit inside DS18B20 to mark the position information of each sensor on the single-bus temperature measurement cable, and assemble the sensors in strict accordance with the marked position information in the production process of the temperature measurement cable. This processing method is the most flexible. It only needs to use the binary tree algorithm to search for all the sensors connected to the current bus before the first use, and sort and store the sensor serial numbers according to the position information. The implementation method is simple and the measurement and control program Good versatility. After starting up, press the "OK" button on the panel to enter the main menu, select "cable number" by pressing the up and down buttons, and press the "OK" button to enter the cable number interface. Marking method, select "unified number" and "layered number" through the up and down keys of the panel keyboard, "unified number" is to number all sensors one by one in order from small to large, that is, write the position information into the TL of EEPROM In the register, only one parameter is needed to locate the position information. "Layer number" locates location information through two parameters, which are respectively branch number and layer number. According to different application scenarios, a cable can be divided into multiple branches, and each branch is numbered according to the method 1. The branch number is written into the TH register of the EEPROM, and the layer number is written into the TL register. Customers can choose one of the numbering methods according to the application scenario, which is convenient and quick.

The wireless intelligent aggregation terminal supports real-time detection of temperature and humidity. The user clicks on the main menu to enter the temperature and humidity detection window. The input method is to add and subtract numbers through the up and down buttons on the panel. After entering the number of data collection terminals, click "OK". Since the system adopts a full wireless energy-saving design, data collection The terminal is in a dormant state when there is no collection task, so after the user clicks "OK", the wireless intelligent convergence terminal will first send a certain amount of wake-up packet data through the wireless communication module to wake up the data collection terminal. After the wake-up packet is sent, the wireless intelligent convergence terminal enters the receiving status and display "Data collection...". After the data acquisition terminal is woken up, the single-bus DS18B20 digital cable connected to the data collection terminal is used for temperature data collection or the humidity sensor connected to the data collection terminal is used for humidity collection. The terminal number of itself is delayed for a certain period of time, and all wireless data collection terminals upload data according to the time queue. After the upload is completed, the data collection terminal enters the dormant state again. After receiving the temperature and humidity data from the data collection terminal, the wireless intelligent converging terminal presents the actual temperature and humidity data to the user through the LCD display. Due to the size limitation of the display, it adopts a page-by-page display method and displays the highest value on the last page. The size of the temperature and the highest humidity, and according to the warehouse number and the terminal number, the second central processing unit obtains the current time through the synchronous clock module, and automatically stores the data in the SD card after adding a time stamp for easy query. Users can check the historical records stored according to the time stamp and warehouse number by selecting the "History Records" item on the main menu. "Two submenu items, if the submenu item "Display Data" is selected, the position information and temperature information of the corresponding sensors will be displayed one by one according to the warehouse number and terminal number from small to large; if the submenu item "Print Data" is selected, the After connecting the micro-printer to the wireless intelligent convergence terminal, click "OK" to print the historical record data for the administrator to view and save.

According to the needs of users, the system can conduct regular inspections. No manual presence is required, just come to the site to check the data when the customer needs it. The user clicks "Scheduled Inspection" under the main menu, and the system prompts to enter the number of warehouses and the inspection time interval. The system defaults to start the inspection from the first warehouse. The inspection time interval is in hours, and the maximum is 24 hours. Enter Method Use the up and down buttons on the panel to add and subtract numbers, and click "OK" after inputting, the system will automatically collect on-site data regularly according to the user's settings and save them, waiting for the user to view. When using the regular inspection function, it is necessary to ensure that each warehouse and the wireless intelligent aggregation terminal are within the communicable range, otherwise the temperature and humidity data may not be collected.

The advantage of using the regular inspection function is that no manual presence is required, and the temperature and humidity data can be automatically detected and saved. If the user cannot go to the site to check the data, he will not be able to understand the status information of the grain in time. For this reason, the wireless intelligent converging terminal supports the SMS alarm function. Through the "Alarm Settings" option under the "System Settings" category under the main menu, set the highest alarm value of temperature and humidity. The alarm value is manually input by the user, and the system default temperature is 35 degrees with 80% humidity. The input method uses the up and down buttons on the panel to add and subtract values, and click "OK" after the input is complete. The system will analyze the data after each inspection. If the temperature and humidity value exceeds the preset alarm value, the system will send the warehouse number, wireless data collection terminal number and the highest temperature and humidity data to on the specified mobile phone for users to view. The user's mobile phone number needs to be written through the serial port. In addition to supporting SMS alarm, the industrial-grade 3G module also supports remote data transmission. Using the UDP data transmission function of the 3G module, the detected temperature and humidity data can be remotely transmitted to the server platform through the 3G module for users to view remotely.

The utility model has the advantages of simple structure, low cost, convenient use, low power consumption, intelligent alarm, simple installation and maintenance, etc., utilizes the carrier wake-up mechanism to effectively reduce the power consumption of the temperature and humidity data collection terminal, and improves the collection terminal The use of SMS alarm function can timely control the change of temperature and humidity data, which has practical value.

The above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be applied to the foregoing embodiments The technical solutions described in the examples are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (6)

1. A wireless low-power intelligent detection device for temperature and humidity data, characterized in that: it includes a wireless intelligent convergence terminal (1), a wireless temperature and humidity data collection terminal (2), and the wireless temperature and humidity data collection terminal (2) It includes a second central processing unit (25), a wireless transceiver module (21), a sensor interface (22), a dial switch (24) and an integrated power supply module (23), wherein the second central processing unit (25) is electrically connected to The wireless transceiver module (21), the sensor interface (22), the dial switch (24) and the integrated power supply module (23); the wireless intelligent aggregation terminal (1) includes a first central processing unit (10), wireless communication module (18), 3G module (16), storage module (11), power supply module (19), keyboard (15), display module (17), printing module (12) and synchronous clock module ( 13), wherein the first central processing unit (10) is electrically connected to the wireless communication module (18), the 3G module (16), the storage module (11), the power supply module (19), the The keyboard (15), the display module (17), the printing module (12) and the synchronous clock module (13). 2. The wireless low-power consumption intelligent detection device of temperature and humidity data according to claim 1, is characterized in that: described wireless communication module (18) adopts the wireless transparent transmission module that model is Si4432, and this module supports 433Mhz and 470Mhz Frequency band, in actual application, the frequency band can be flexibly configured through the DIP switch, and the carrier wake-up mechanism is used to realize the low-power data collection and transmission of the system. 3. according to the wireless low power consumption intelligent detection device of temperature and humidity data described in claim 1, it is characterized in that: described second CPU (25) is AVR series single-chip microcomputer, supports 3.3V-5V power supply, through external The selection of the crystal oscillator frequency can further reduce the power consumption of the single-chip microcomputer on the basis of satisfying the function realization speed, the model of the first central processing unit (10) is MCUAtmega128L, and the model of the second central processing unit (25) is MCUAtmega16L . 4. The wireless low-power intelligent detection device of temperature and humidity data according to claim 1, characterized in that: the integrated power supply module (23) is a 3.7V lithium polymer battery module comprising charging, and the lithium polymer battery module The battery module has a charge and discharge protection circuit, and can be connected with a 12V/1A or 18V/1A solar panel, and an LED indicator light that can display the charging status is set on the housing. 5. according to the wireless low power consumption intelligent detection device of temperature and humidity data described in claim 1, it is characterized in that: described wireless intelligent converging terminal (1) supports the numbering and data collection of single-bus DS18B20 temperature measurement cable, supports pair of The regular inspection and real-time detection functions of the wireless temperature and humidity data collection terminal (2) can receive and store the data of the wireless temperature and humidity data collection terminal (2), and can perform upper and lower limits of temperature and humidity on the received data Judgment, if there is an over-limit situation, immediately send an SMS alarm through the industrial-grade MC86303G module, and use the UDP network data transmission mode of the industrial-grade MC86303G module for remote data transmission. 6. The wireless low-power consumption intelligent detection device of temperature and humidity data according to claim 1, characterized in that: the solar power contained in the integrated power supply module (23) is powered by a 12V/1A or 18V/1A solar panel, Composed of a step-down circuit and a voltage stabilizing circuit, it can stably output 4.2V/1A voltage for the normal operation of the wireless temperature and humidity data acquisition terminal, and can also be used for charging the polymer lithium battery. The use of solar power can make full use of renewable resources, which is environmentally friendly. .